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60 grams of FeS2, is burnt in air, how much sulfur dioxide will produce?

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60 grams of FeS2, is burnt in air, how much sulfur dioxide will produce?

(a) 16 grams

(b) 32 grams

(c) 64 grams

(d) 128 grams

I got this question in class test.

My doubt is from Stoichiometry in section The Chemical Reaction Equation & Stoichometry, Material Balances for Processes Involving Reaction and Multiple Units of Basic Chemical Engineering

1 Answer

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The correct answer is (c) 64 grams

To elaborate: The balanced chemical reaction is 4FeS2 + 11O2 -> 2Fe2O3 + 8SO2, => amount of SO2 produced = (60/120)*(8/4)*64 = 64 grams.

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